The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant lantana in Waltham can be estimated by reviewing the USDA zone info.

Planting Calendar for Lantana

Frost tolerance for lantana:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You can not plant lantana until after the last frost because they require warm weather.

The earliest that you can plant lantana in Waltham is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant lantana and expect a good harvest is probably August. Any later than that and your lantana may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your lantana indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Waltham. It might get as low as -10°F during the coldest months of winter.

Always keep in mind that USDA zone info for Waltham is just an average and the actual date of last frost is different every year. Half of the time in Waltham you get surprised by a frost after April 15 so make sure that you are ready to cover your lantana if you have a surprise late frost.

USDA Zone Info for Waltham

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Waltham

You may be interested in your other planting guides for Waltham.